[1]张小明,杨晓倩,戚冕,等.骆马湖沉积物营养物和重金属分布特征及生态风险评价[J].江苏水利,2026,(05):1-6.
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骆马湖沉积物营养物和重金属分布特征及生态风险评价()

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2026年05期
页码:
1-6
栏目:
水生态与环境
出版日期:
2026-05-01

文章信息/Info

Title:
Distribution characteristics and ecological risk assessment of nutrients and heavy metals in sediments of Luoma Lake
文章编号:
1007-7839（2026）05-0001-0006
作者:
张小明; 杨晓倩; 戚冕; 李超
江苏省水文水资源勘测局徐州分局，江苏 徐州 221018
Author(s):
ZHANG Xiaoming;  YANG Xiaoqian;  QI Mian;  LI Chao
Xuzhou Branche of Jiangsu Province Hydrology and Water Resources Investigation Bureau, Xuzhou 221018, China
关键词:
骆马湖; 沉积物; 营养物; 重金属; 生态风险
Keywords:
Luoma Lake;  sediment;  nutrients;  heavy metal;  ecological risk
分类号:
X52
文献标志码:
A
摘要:
以骆马湖的沉积物为研究对象，通过对采集的柱状沉积物样品的粒径及其总氮、总磷、有机质和8种重金属（Hg、As、Cr、Ni、Cu、Zn、Cd、Pb）的含量进行分析，研究其分布特征、来源及生态风险。结果表明，骆马湖北部表层沉积物为粗粉砂，南部为细粉砂；有机质含量为12.0~28.2 g/kg，处于Ⅲ级中度污染状态；总氮含量为546~1 987 mg/kg，处于Ⅳ级重度污染状态；总磷含量为506~746 mg/kg，处于IV级重度污染状态；有机质主要来源于陆源输入，总磷受中运河、沂河来水影响较大；营养物在空间分布上从北到南逐渐增高，纵向分布上从上到下逐渐降低。沉积物中重金属总体含量不高，砷（As）污染最为严重，重金属总体潜在生态风险为低风险；重金属在空间分布上无明显变化规律，在纵向分布上呈表层富集的特征。
Abstract:
Taking sediments from Luoma Lake as the research object, the contents of particle size, total nitrogen （TN）, total phosphorus （TP）, organic matter （OM） and eight heavy metals （Hg, As, Cr, Ni, Cu, Zn, Cd, Pb） in collected columnar sediment samples were analyzed to investigate their distribution characteristics, sources and ecological risks. The results showed that the surface sediments in the northern part of Luoma Lake were coarse silt, while those in the southern part were fine silt. The organic matter content ranged from 12.0 to 28.2 g/kg, indicating moderate pollution （Grade Ⅲ）. The total nitrogen content ranged from 546 to 1987 mg/kg, indicating heavy pollution （Grade Ⅳ）. The total phosphorus content ranged from 506 to 746 mg/kg, also indicating heavy pollution （Grade Ⅳ）. Organic matter was mainly derived from terrigenous input, while total phosphorus was significantly influenced by inflow from the Middle Canal and Yi River. Nutrients showed an increasing trend from north to south in spatial distribution and a decreasing trend from top to bottom in vertical distribution. The overall heavy metal content in the sediments was not high, with arsenic （As） being the most serious pollutant. The overall potential ecological risk of heavy metals was classified as low risk. Heavy metals showed no obvious spatial distribution pattern but exhibited surface enrichment characteristics in vertical distribution.

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备注/Memo

备注/Memo:
收稿日期：2026-03-11
作者简介：张小明（1984—），男，硕士，主要从事水环境监测和水资源分析评价工作。E-mail: 251473369@qq.com
更新日期/Last Update: 2026-05-01